the reduction of a membrane potential to a less negative value. It is caused by the influx of cations, such as sodium and calcium, through ion channels in the membrane. In many neurons and muscle cells, depolarization may lead to an electric impulse called an action potential.
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Here are a man's best bets for eluding prostate cancer, according to researchers and health experts. 1. The right diet: beyond marinara sauce. For years, men who wanted to lower their risk for prostate cancer were advised to eat more cooked tomatoes, which are rich in lycopene, an antioxidant that appears to fight tumors. Today some health experts say that changing your diet could cut the risk for prostate cancer by as much as 30 percent to 50 percent.